Sample questions from all CSLB trade exams with Questions and Correct Answers 2025.

Sample questions from all CSLB trade
exams with Questions and Correct
Answers 2025




When ,using ,a ,crane ,to ,lift ,a ,12,000-gallon ,tank ,out ,of ,the ,excavation, ,what ,is
,the ,preferable ,position ,of ,the ,rigging ,lines ,attached ,to ,the ,tank's ,lifting ,eyes? ,


A. ,One ,lifting ,line ,should ,be ,horizontal
B. ,The ,lifting ,lines ,should ,be ,as ,far ,apart ,as ,possibles
C. ,The ,lifting ,lines ,should ,be ,as ,horizontal ,as ,possible
D. ,The ,lifting ,lines ,should ,be ,as ,vertical ,as ,possible ,- ,CORRECT ,ANSWER-The
,lifting ,lines ,should ,be ,as ,vertical ,as ,possible


Which ,of ,the ,following ,describes ,surfacing ,ACM?

A. ,Material ,that ,contains ,more ,than ,1% ,asbestos
B. ,Material ,that ,contains ,more ,than ,0.1% ,asbestos
C. ,Material ,that ,contains ,more ,than ,0.01% ,asbestos
D. ,Material ,that ,contains ,more ,than ,0.001% ,asbestos ,- ,CORRECT ,ANSWER-
Material ,that ,contains ,more ,than ,1% ,asbestos

When ,removing ,asbestos ,as ,a ,multi-employer ,work ,site, ,the ,asbestos
,abatement ,contractor ,must ,do ,which ,of ,the ,following?


A. ,Ensure ,that ,all ,other ,employers ,leave ,the ,site
B. ,Inform ,the ,local ,Cal/OSHA ,office ,within ,48 ,hours
C. ,Ensure ,that ,all ,asbestos ,is ,removed

,D. ,Inform ,each ,of ,the ,employers ,about ,the ,asbestos ,work ,being ,performed. ,-
,CORRECT ,ANSWER-Inform ,each ,of ,the ,employers ,about ,the ,asbestos ,work
,being ,performed


When ,must ,a ,contractor ,provide ,and ,require ,the ,use ,of ,protective ,clothing?

A. ,When ,Class ,II ,work ,requires ,removal ,of ,ACM ,exceeding ,10 ,square ,feet
B. ,When ,airborne ,exposure ,exceeds ,the ,TWA ,and ,excursion ,limits
C. ,When ,Class ,II ,work ,requires ,removal ,of ,TSI ,exceeding ,25 ,linear ,feet
D. ,When ,a ,negative ,exposure ,assessment ,is ,produced ,- ,CORRECT ,ANSWER-
When ,airborne ,exposure ,exceeds ,the ,TWA ,and ,excursion ,limits

Alternating ,current ,would ,most ,likely ,be ,used ,in ,GTAW ,to ,weld ,which ,of ,the
,following ,metals?


A. ,Low ,carbon ,steel ,
B. ,Deoxidized ,copper ,
C. ,Aluminum ,
D. ,Stainless ,steel ,- ,CORRECT ,ANSWER-Aluminum

WHat ,is ,the ,minimum ,thickness ,of ,steel ,that ,is ,covered ,by ,the ,AWS ,D1.1
,Structural ,Steel ,welding ,code?


A. ,1/8"
B. ,1/4"
C. ,5/16"
D. ,3/8" ,- ,CORRECT ,ANSWER-1/8"

When ,welding ,with ,FCAW, ,how ,can ,the ,operator ,control ,excess ,spatter?

A. ,Change ,the ,drag ,angle
B. ,Run ,stringer ,beads.
C. ,Shorten ,the ,stickout
D. ,Lengthen ,the ,stickout ,- ,CORRECT ,ANSWER-Shorten ,the ,stickout

To ,read ,and ,properly ,interpret ,laboratory ,analysis ,reports ,as ,they ,apply ,to
,hazardous ,sites, ,a ,contractor ,should ,have ,which ,of ,the ,following?


A. ,The ,phone ,number ,of ,a ,contract ,a ,the ,lead ,agency
B. ,Basic ,knowledge ,of ,math
C. ,A ,contract ,at ,Cal/OSHA
D. ,Basic ,knowledge ,of ,chemistry ,and ,the ,measurements ,used ,- ,CORRECT
,ANSWER-Basic ,knowledge ,of ,chemistry ,and ,the ,measurements ,used


How ,much ,material ,will ,it ,take ,to ,fill ,up ,three ,round ,holes ,drilled ,into ,the
,ground ,25 ,feet ,deep ,and ,2 ,feet ,in ,diameter?

, A. ,235.5 ,cubic ,feet
B. ,180.5 ,cubic ,feet
C. ,150.2 ,cubic ,feet
D. ,100.7 ,cubic ,feet ,- ,CORRECT ,ANSWER-235.5 ,cubic ,feet

What ,method ,should ,be ,used ,to ,install ,electrical ,and ,telephone ,conduit ,in ,the
,same ,trench?


A. ,Electrical ,over ,telephone ,conduit ,with ,a ,concrete ,barrier ,and ,4" ,between
,them
B. ,Electrical ,over ,telephone ,conduit ,with ,a ,separation ,of ,at ,least ,12" ,in ,between
C. ,Telephone ,over ,electrical ,conduit ,secured ,together ,every ,12" ,
D. ,Telephone ,over ,electrical ,conduit ,with ,a ,separation ,of ,at ,least ,12" ,in
,between ,- ,CORRECT ,ANSWER-Telephone ,over ,electrical ,conduit ,with ,a
,separation ,of ,at ,least ,12" ,in ,between


When ,replacing ,pavement ,over ,a ,trench, ,what ,is ,meant ,by ,"overcutting"?

A. ,All ,wide ,spots ,and ,bell ,holes ,are ,cut ,square ,before ,paving
B. ,Paving ,is ,reinstalled ,one ,inch ,thicker ,than ,what ,was ,removed
C. ,The ,trench ,is ,base-paved ,and ,capped ,later
D. ,The ,paving ,is ,cut ,outside ,the ,ditch ,line ,by ,a ,few ,inches ,- ,CORRECT
,ANSWER-The ,paving ,is ,cut ,outside ,the ,ditch ,line ,by ,a ,few ,inches


What ,is ,the ,maximum ,fluoride ,level ,permitted ,in ,drinking ,water?

A. ,2.0 ,mg/L
B. ,4.0 ,mg/L
C. ,6.0 ,mg/L
D. ,8.0 ,mg/L ,- ,CORRECT ,ANSWER-4.0 ,mg/L

When ,installing ,hard ,copper ,piping ,underground, ,what ,types ,of ,piping ,should ,a
,contractor ,use?


A. ,K ,and ,L
B. ,K ,and ,M
C. ,L ,and ,M
D. ,M ,and ,DWV ,- ,CORRECT ,ANSWER-K ,and ,L

What ,is ,the ,function ,of ,a ,cation ,exchange ,unit?

A. ,To ,oxidize ,iron ,fro ,the ,water
B. ,To ,remove ,calcium ,and ,magnesium
C. ,To ,reduce ,dissolved ,solids
D. ,To ,increase ,pH ,- ,CORRECT ,ANSWER-To ,remove ,calcium ,and ,magnasium